Question

Determinati x€ R astef incat 69-5(x-2) la a doua =24

Answer 1

69-5(x-2)^2=24
5(x-2)^2=45
(x-2)^2=9
X-2=3=>x=5
X-2=-3=>x=-1
Succes !

Answer 2

69-5(x-2)²=24

-5(x-2)²=24-69=-45

${(x - 2)}^{2} = \frac{ - 45}{ - 5} = \frac{45}{5} = 9 \\ \\ x - 2 = ± \sqrt{9} \\ \\ x - 2 = ± 3$

x-2=3=>x=3+2=5

x-2=-3=>x=-3+2=-1